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Bosch Active Line, Performance Line & Performance Line CX main motor bearing.

We only use high quality bearings and ensure they have labyrinth seals for extra protection from water ingress.

DO NOT fit bearings with “MAX” designation, these bearings are designed as pivot bearings and not as a rolling bearing. They will fail prematurely in a motor application.

Bosch Generation 2 motor BDU2xx (NOTE: Small chainring)